could heighten
Verbe régulier : heighten - heightened- heightened
Traduction française : relever - augmenter 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could heighten
you could heighten
she could heighten
we could heighten
you could heighten
they could heighten 	I could be heightening
you could be heightening
she could be heightening
we could be heightening
you could be heightening
they could be heightening	I could have heightened
you could have heightened
she could have heightened
we could have heightened
you could have heightened
they could have heightened	I could have been heightening
you could have been heightening
she could have been heightening
we could have been heightening
you could have been heightening
they could have been heightening	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't heighten
you couldn't heighten
she couldn't heighten
we couldn't heighten
you couldn't heighten
they couldn't heighten 	I couldn't be heightening
you couldn't be heightening
she couldn't be heightening
we couldn't be heightening
you couldn't be heightening
they couldn't be heightening	I couldn't have heightened
you couldn't have heightened
she couldn't have heightened
we couldn't have heightened
you couldn't have heightened
they couldn't have heightened	I couldn't have been heightening
you couldn't have been heightening
she couldn't have been heightening
we couldn't have been heightening
you couldn't have been heightening
they couldn't have been heightening	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I heighten?
could you heighten?
could she heighten?
could we heighten?
could you heighten?
could they heighten? 	could I be heightening?
could you be heightening?
could she be heightening?
could we be heightening?
could you be heightening?
could they be heightening? 	could I have heightened?
could you have heightened?
could she have heightened?
could we have heightened?
could you have heightened?
could they have heightened? 	could I have been heightening?
could you have been heightening?
could she have been heightening?
could we have been heightening?
could you have been heightening?
could they have been heightening? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I heighten?
couldn't you heighten?
couldn't she heighten?
couldn't we heighten?
couldn't you heighten?
couldn't they heighten? 	couldn't I be heightening?
couldn't you be heightening?
couldn't she be heightening?
couldn't we be heightening?
couldn't you be heightening?
couldn't they be heightening? 	couldn't I have heightened?
couldn't you have heightened?
couldn't she have heightened?
couldn't we have heightened?
couldn't you have heightened?
couldn't they have heightened? 	couldn't I have been heightening?
couldn't you have been heightening?
couldn't she have been heightening?
couldn't we have been heightening?
couldn't you have been heightening?
couldn't they have been heightening?